Director-diffuser for a fire hydrant



FIG. 1 is an rear elevational view of a director-diffuser for a fire hydrant showing my new design;

FIG. 2 is a reduced top, front, and side perspective view thereof;

FIG. 3 is a reduced top and front perspective view thereof; and

FIG. 4 is a further reduced front and side perspective view thereof, with the broken-line depiction of a fire hydrant body being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a director-diffuser for a fire hydrant, as shown and described. 